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Trial registered on ANZCTR
Registration number
ACTRN12609000295246
Ethics application status
Approved
Date submitted
28/04/2009
Date registered
18/05/2009
Date last updated
18/05/2009
Type of registration
Retrospectively registered
Titles & IDs
Public title
Investigation of Genetic Predictors of the Response to Selective Serotonin Re-Uptake Inhibitors Treatment
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Scientific title
Investigation of Genetic Predictors of the Response to Selective Serotonin Re-Uptake Inhibitors (SSRI) Treatment in individuals suffering from major depression
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Depression
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Antidepressant
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Treatment prediction
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Condition category
Condition code
Mental Health
4997
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0
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Depression
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
escitalopram in doses 10-20mg per day, during 12 weeks, oral administration
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Intervention code [1]
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Prevention
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Intervention code [2]
4447
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Early detection / Screening
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Intervention code [3]
4448
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Treatment: Drugs
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Comparator / control treatment
None
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Montgomery-Asberg's Depression Rating Scale (MADRS) (remission score < 12)
The genotypic frequencies of serotonin transporter gene were compared between remitters and non-remitters to escitalopram medication. Additionally, the mean change on the MADRS scale was compared between serotonin transporter genotypes at week 12 of escitalopram medication.
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Assessment method [1]
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Timepoint [1]
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The primary outcome was measured at the following time points: week 0, 2, 4, 6, 8, 10 and 12
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Secondary outcome [1]
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Hamilton Rating Scale for Depression (HRSD) (remission score < 8)
The genotypic frequencies of serotonin transporter gene were compared between remitters and non-remitters to escitalopram medication. Additionally, the mean change on the HRDS scale was compared between serotonin transporter genotypes at week 12 of escitalopram medication.
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Assessment method [1]
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Timepoint [1]
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The secondary outcome was measured at the following time points: week 0, 2, 4, 6, 8, 10 and 12
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Eligibility
Key inclusion criteria
Both genders
Major Depression diagnosis according to Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria
At severity of depression of at least moderate as indicated by a Montgomery-Asberg's Depression Rating Scale (MADRS) total score of 22 or higher
Only secondary current comorbid anxiety disorder
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Minimum age
18
Years
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Maximum age
70
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Bipolar disorder
Psychotic disorder or features
Current eating disorders
Mental retardation
Any pervasive developmental disorder or cognitive disorder
Alcohol or drug abuse-related disorders within 12 months prior to baseline
Acute infections, neurological or any other unstable general disorders, serious suicide risk, formal behaviour therapy, or systematic psychotherapy, pregnancy or breastfeeding
A history of hypersensitivity or non-response to escitalopram
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Phase 4
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Type of endpoint/s
Safety/efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
1/12/2006
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
135
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
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Estonia
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State/province [1]
1742
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Tartu University
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Address [1]
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Raja 31, 50417, Tartu
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Country [1]
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Estonia
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Primary sponsor type
University
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Name
Tartu University
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Address
Raja 31, 50417, Tartu
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Country
Estonia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Board Name: Estonian State Agency of Medicines
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Ethics committee address [1]
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Nooruse 1, 50411, Tartu
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Ethics committee country [1]
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Estonia
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Date submitted for ethics approval [1]
6928
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Approval date [1]
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01/01/2007
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Ethics approval number [1]
6928
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2007-002649-19
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Summary
Brief summary
The antidepressant medications are among the most commonly prescribed pharmacological agents in patients with mood and anxiety disorder. Despite recent advances in antidepressant pharmacotherapy, there is a pressing need for substantial optimization and improvment of outcome of pharmacotherapy of psychiatric disorders by providing individualized and science-based treatment guidelines. Besides it is rather difficult in clinical practice to predict, which patient will response to a certain pharmacological treatment well and which one less so. Putative predictors of response to antidepressant include demographic and clinical characteristics, personality traits, biological markers and psychophysiological features. Recently the research studies shown that divergences in antidepressant efficacy may be related to genetic variations of patients. The pharmacogenetic studies have multiplied in recent decade due to the impact that such studies may have in everyday clinical practice once reliable predictors could be identified. The pharmacogenetic research using new deoxyribonucleic acid (DNA) microarray-based technology can reasonably be expected to contribute to the prediction of likelihood of treatment response and risk of development of adverse side effects in individual patients in case of antidepressant treatment. By reducing costly treatment failures and the likelihood of serious adverse events, pharmacogenetic testing may help to improve the treatment possibilities for chronic diseases, reduce the burden prescription drug costs, and lower the costs of drug development. The further detailed investigation of peripheral gene expression profiles may help to identify responsible genes that underlie the process of development of affective disorders and open novel horizons for understanding molecular mechanisms of psychopharmacological treatment.
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Trial website
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Trial related presentations / publications
Maron E, Tammiste A, Kallassalu K, Eller T, Vasar V, Nutt DJ, Metspalu A. Serotonin transporter promoter region polymorphisms do not influence treatment response to escitalopram in patients with major depression. Eur Neuropsychopharmacol. 2009 Mar 7. [Epub ahead of print] PubMed PMID: 19272758.
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Public notes
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Contacts
Principal investigator
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Eduard Maron
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Address
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Raja 31, 50417, Tartu
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Country
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Estonia
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Phone
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+3727318812
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Eduard Maron
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Address
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Raja 31, 50417, Tartu
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Country
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Estonia
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Phone
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+3727318812
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Fax
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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